Refresh Processing Time - Mitsubishi Electric MELSEC iQ-R Series User Manual

Refresh processing time

Refresh processing time [s] is included in the scan time of the CPU module. For the scan time, refer to the following.
 MELSEC iQ-R CPU Module User's Manual (Application)
The refresh processing time [s] required for the refresh settings is calculated by the following formula.
• Refresh processing time [s] = Time for reading refresh (for transfer to the CPU module) + Time for writing refresh (for
transfer to the intelligent function module)
The time for reading refresh and writing refresh differ depending on the setting in "Target".
When the inter-module synchronization function is used, the time for reading refresh and writing refresh is added at the
execution of the inter-module synchronous interrupt program.
When "Target" is Module Label or Refresh Data Register (RD)
The following table lists the time for reading refresh and writing refresh when the RCPU is used.
Model name
R60DA4
R60DAV8, R60DAI8
R60DA4 (Q compatible mode)
R60DAV8, R60DAI8 (Q compatible
mode)
When "Target" is Device
Calculate the time for reading refresh and writing refresh depending on the number of items set in the refresh settings and the
number of items to be transferred (words). For the calculation method, refer to the following.
 MELSEC iQ-R CPU Module User's Manual (Application)
Classification
Reading refresh
Writing refresh
Reading refresh
Writing refresh
Reading refresh
Writing refresh
Reading refresh
Writing refresh
When refresh settings are
configured
18.85s
11.5s
23.17s
13.9s
19.18s
9.72s
19.38s
9.76s
When the inter-module
synchronization function is
used
12.63s
9.76s
12.63s
9.84s
12.63s
9.76s
12.63s
9.84s
2 PARAMETER SETTING
2.4 Refresh Settings
2
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